----------------------------------------------------------------------------
--	Ranked Matchmaking AI v1.1 NewStructure
--	Author: adamqqq		Email:adamqqq@163.com
----------------------------------------------------------------------------
--------------------------------------
-- General Initialization
--------------------------------------
local utility = require(GetScriptDirectory() .. "/utility")
local ability_item_usage_generic = require(GetScriptDirectory() .. "/ability_item_usage_generic")
local AbilityExtensions = require(GetScriptDirectory() .. "/util/AbilityAbstraction")


local debugmode = false
local npcBot = GetBot()
if npcBot == nil or npcBot:IsIllusion() then
	return
end

local Talents = {}
local Abilities = {}
local AbilitiesReal = {}

ability_item_usage_generic.InitAbility(Abilities, AbilitiesReal, Talents)


local AbilityToLevelUp = {
	Abilities[1],
	Abilities[2],
	Abilities[1],
	Abilities[3],
	Abilities[2],
	Abilities[5],
	Abilities[2],
	Abilities[2],
	Abilities[1],
	"talent",
	Abilities[1],
	Abilities[5],
	Abilities[3],
	Abilities[3],
	"talent",
	Abilities[3],
	"nil",
	Abilities[5],
	"nil",
	"talent",
	"nil",
	"nil",
	"nil",
	"nil",
	"talent",
}

local TalentTree = {
	function() return Talents[1] end,
	function() return Talents[4] end,
	function() return Talents[5] end,
	function() return Talents[7] end,
	function() return Talents[2] end,
	function() return Talents[3] end,
	function() return Talents[6] end,
	function() return Talents[8] end,
}

utility.CheckAbilityBuild(AbilityToLevelUp)

function BuybackUsageThink()
	ability_item_usage_generic.BuybackUsageThink();
end

function CourierUsageThink()
	ability_item_usage_generic.CourierUsageThink();
end

function AbilityLevelUpThink()
	ability_item_usage_generic.AbilityLevelUpThink2(AbilityToLevelUp, TalentTree)
end

--------------------------------------
-- Ability Usage Thinking
--------------------------------------
local cast = {}
cast.Desire = {}
cast.Target = {}
cast.Type = {}
local Consider = {}
local CanCast = { utility.NCanCast, utility.NCanCast, utility.NCanCast, utility.UCanCast, utility.NCanCast }
local enemyDisabled = utility.enemyDisabled

function GetComboDamage()
	return ability_item_usage_generic.GetComboDamage(AbilitiesReal)
end

function GetComboMana()
	return ability_item_usage_generic.GetComboMana(AbilitiesReal)
end

local function GetBlinkAttackLocation(enemy, blinkRadius)
	local attackDistance = enemy:GetBoundingRadius() + npcBot:GetBoundingRadius()
	if AbilityExtensions:HasPhasedMovement(enemy) or AbilityExtensions:HasUnobstructedMovement(enemy) then
		attackDistance = npcBot:GetAttackRange()
	end
	local enemyNextStep = enemy:GetLocation() +
		Vector(math.cos(enemy:GetFacing()), math.sin(enemy:GetFacing())) * attackDistance
	local distanceFromNextStep = GetUnitToLocationDistance(npcBot, enemyNextStep)
	if AbilityExtensions:HasPhasedMovement(enemy) or AbilityExtensions:HasUnobstructedMovement(enemy) then

	end
	if blinkRadius <= distanceFromNextStep then
		return AbilityExtensions:GetPointFromLineByDistance(npcBot:GetLocation(), enemy:GetLocation(), blinkRadius)
	else
		return enemyNextStep
	end
end

local function TooDangerousToBlinkNear(npc)
	local enoughHealth = AbilityExtensions:GetHealthPercent(npcBot) >= AbilityExtensions:GetHealthPercent(npc) + 0.2 and
		npcBot:GetHealth() >= npc:GetHealth() * 0.8
	local isVeryDangerous = npc:HasModifier("modifier_medusa_stone_gaze") or
		npc:HasModifier("modifier_faceless_void_chronosphere_selfbuff") or
		npc:HasModifier("modifier_monkey_king_fur_army_soldier_in_position") or AbilityExtensions:IsInvulnerable(npc)
	if isVeryDangerous then
		return true
	end
	local isDangerous = npc:HasModifier("modifier_batrider_firefly") or npc:IsMagicImmune()
	if isDangerous and not enoughHealth then
		return true
	end
	return false
end

-- antimage_blink
Consider[2] = function()
	local abilityNumber = 2
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() or AbilityExtensions:CannotTeleport(npcBot) then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetSpecialValueInt("AbilityCastRange")
	local searchRange = math.min(CastRange, 1600)

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(searchRange, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local trees = npcBot:GetNearbyTrees(300)

	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			local enemys2 = WeakestEnemy:GetNearbyHeroes(900, true, BOT_MODE_NONE)
			if (CanCast[abilityNumber](WeakestEnemy) and #enemys2 <= 2)
			then
				if (
					HeroHealth <= WeakestEnemy:GetActualIncomingDamage(GetComboDamage(), DAMAGE_TYPE_MAGICAL) and
						npcBot:GetMana() > ComboMana and GetUnitToUnitDistance(npcBot, WeakestEnemy) > 200)
				then
					if TooDangerousToBlinkNear(WeakestEnemy) then
						return 0
					end
					return BOT_ACTION_DESIRE_HIGH, GetBlinkAttackLocation(WeakestEnemy, CastRange)
				end
			end
		end
	end
	--------------------------------------
	-- Mode based usage
	--------------------------------------
	-- If we get stuck
	if utility.IsStuck(npcBot)
	then
		local loc = utility.GetEscapeLoc();
		return BOT_ACTION_DESIRE_HIGH, utility.GetUnitsTowardsLocation(npcBot, loc, CastRange);
	end

	-- If we're seriously retreating, blink away
	if (
		AbilityExtensions:IsRetreating(npcBot) and npcBot:DistanceFromFountain() >= 2000 and
			(ManaPercentage >= 0.6 or npcBot:GetActiveModeDesire() >= BOT_MODE_DESIRE_HIGH or HealthPercentage <= 0.6))
	then
		return BOT_ACTION_DESIRE_HIGH, utility.GetUnitsTowardsLocation(npcBot, GetAncient(GetTeam()), CastRange)
	end

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK)
	then
		local npcEnemy = npcBot:GetTarget();

		if (ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana)
		then
			if (npcEnemy ~= nil)
			then
				local enemys2 = npcEnemy:GetNearbyHeroes(900, false, BOT_MODE_NONE)
				if (enemys2 ~= nil and #enemys2 <= 2)
				then
					if (
						CanCast[abilityNumber](npcEnemy) and GetUnitToUnitDistance(npcBot, npcEnemy) < CastRange + 75 * #allys and
							GetUnitToUnitDistance(npcBot, npcEnemy) > 200)
					then
						if TooDangerousToBlinkNear(npcEnemy) then
							return 0
						end
						return BOT_ACTION_DESIRE_MODERATE, GetBlinkAttackLocation(npcEnemy, CastRange)
					end
				end
			end
		end
	end

	-- use blink to dodge ability
	local projectiles = AbilityExtensions:GetIncomingDodgeWorthProjectiles(npcBot)
	local castPoint = ability:GetCastPoint()
	local defaultProjectileVelocity = 1500
	if #projectiles ~= 0 and not AbilitiesReal[3]:IsFullyCastable() and
		not npcBot:HasModifier("modifier_antimage_counterspell") then
		for _, projectile in pairs(projectiles) do
			if GetUnitToLocationDistance(npcBot, projectile.location) > castPoint * defaultProjectileVelocity then
				local escapeLocation = AbilityExtensions:GetPointFromLineByDistance(npcBot:GetLocation(), projectile.location, 400)
				return BOT_ACTION_DESIRE_MODERATE, escapeLocation
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

end

-- antimage_counterspell
Consider[3] = function()
	local abilityNumber = 3
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE)
	local enemys = npcBot:GetNearbyHeroes(900, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local trees = npcBot:GetNearbyTrees(300)

	-- If we're seriously retreating, see if we can land a stun on someone who's damaged us recently
	if (npcBot:GetActiveMode() == BOT_MODE_RETREAT and npcBot:GetActiveModeDesire() >= BOT_MODE_DESIRE_HIGH)
	then
		local incProj = npcBot:GetIncomingTrackingProjectiles()
		for _, p in pairs(incProj) do
			if GetUnitToLocationDistance(npcBot, p.location) <= 300 and p.is_attack == false and
				not AbilityExtensions:IgnoreAbilityBlock(p.ability) then
				return BOT_ACTION_DESIRE_HIGH;
			end
		end
	end

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK or
		(npcBot:GetActiveMode() == BOT_MODE_LANING and ManaPercentage >= 0.4))
	then
		local npcTarget = npcBot:GetTarget()
		if (npcTarget ~= nil)
		then
			if CanCast[abilityNumber](npcTarget) and GetUnitToUnitDistance(npcBot, npcTarget) < 600
			then
				local incProj = AbilityExtensions:GetIncomingDodgeWorthProjectiles(npcBot)
				for _, p in pairs(incProj) do
					if GetUnitToLocationDistance(npcBot, p.location) <= 300 then
						return BOT_ACTION_DESIRE_HIGH
					end
				end
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

end

-- antimage_mana_void
Consider[4] = function()
	local abilityNumber = 4
	local ability = AbilitiesReal[abilityNumber]
	if not ability:IsFullyCastable() then
		return 0
	end
	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE)
	local enemies = AbilityExtensions:Filter(npcBot:GetNearbyHeroes(1600, true, BOT_MODE_NONE),
		function(t) return GetUnitToUnitDistance(npcBot, t) >= 450 end)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemies)
	if #enemies == 0 then
		return 0
	end
	if npcBot:GetActiveMode() ~= BOT_MODE_RETREAT and (#enemies >= 2 or enemies[1]:GetHealth() >= npcBot:GetHealth() * 1.5) then
		return BOT_ACTION_DESIRE_MODERATE, WeakestEnemy:GetLocation()
	end
end

-- antimage_mana_overload (Blink Fragment)
Consider[5] = function()

	local abilityNumber = 5
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local DamagePercent = ability:GetSpecialValueFloat("mana_void_damage_per_mana")
	local Radius = ability:GetAOERadius();

	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	--Try to kill enemy hero


	if npcBot:GetActiveMode() ~= BOT_MODE_RETREAT then
		local targets = npcBot:GetNearbyHeroes(CastRange + 400, true, BOT_MODE_NONE)
		local goodTargets = {}
		for _, t in pairs(targets) do
			if AbilityExtensions:MustBeIllusion(npcBot, t) then
				break
			end
			local g = {}
			local enemies = AbilityExtensions:Filter(t:GetNearbyHeroes(Radius, false, BOT_MODE_NONE) or {},
				function(tt) return AbilityExtensions:MayNotBeIllusion(npcBot, tt) end)
			local rawDamage = (t:GetMaxMana() - t:GetMana()) * DamagePercent
			g.totalDamage = rawDamage * (AbilityExtensions:GetEnemyHeroNumber(npcBot, enemies) + 1)
			g.totalKill = AbilityExtensions:Count(enemies, function(e)
				return e:GetActualIncomingDamage(rawDamage, DAMAGE_TYPE_MAGICAL) >= e:GetHealth() and
					not AbilityExtensions:CannotBeKilledNormally(e)
			end)
			g.totalKillNames = AbilityExtensions:Map(AbilityExtensions:Filter(enemies, function(e)
				return e:GetActualIncomingDamage(rawDamage, DAMAGE_TYPE_MAGICAL) >= e:GetHealth() and
					not AbilityExtensions:CannotBeKilledNormally(e)
			end), function(e)
				return e:GetUnitName()
			end)
			g.rate = g.totalKill + g.totalDamage * 600 / 10000 * npcBot:GetNetWorth()
			g.target = t
			table.insert(goodTargets, g)
		end
		if #goodTargets > 1 then
		end
		AbilityExtensions:Sort(goodTargets, function(a, b) return b.rate - a.rate end)
		local t = goodTargets[1]
		if t ~= nil then
			if t.totalDamage >= 600 / 10000 * npcBot:GetNetWorth() and
				(t.target:GetMaxMana() - t.target:GetMana()) >= 300 + DotaTime() / 4 and
				(
				AbilityExtensions:GetManaPercent(t.target) <= 0.1 or
					npcBot:GetActiveMode() ~= BOT_MODE_RETREAT and GetUnitToUnitDistance(npcBot, t) <= npcBot:GetAttackRange()) then
				return BOT_ACTION_DESIRE_HIGH, t.target
			end
			if t.totalKill >= 2
				or
				t.totalKill == 1 and not t.target:WasRecentlyDamagedByAnyHero(1) and
				#t.target:GetNearbyHeroes(350, true, BOT_MODE_NONE) == 0 then
				return BOT_ACTION_DESIRE_HIGH, t.target
			end
		end
	end

	for _, npcEnemy in pairs(enemys) do
		if (npcEnemy:IsChanneling() and CanCast[abilityNumber](npcEnemy))
		then
			return BOT_ACTION_DESIRE_MODERATE, npcEnemy
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

end
AbilityExtensions:AutoModifyConsiderFunction(npcBot, Consider, AbilitiesReal)

function AbilityUsageThink()

	-- Check if we're already using an ability
	if (npcBot:IsUsingAbility() or npcBot:IsChanneling() or npcBot:IsSilenced())
	then
		return
	end

	ComboMana = GetComboMana()
	AttackRange = npcBot:GetAttackRange()
	ManaPercentage = npcBot:GetMana() / npcBot:GetMaxMana()
	HealthPercentage = npcBot:GetHealth() / npcBot:GetMaxHealth()

	cast = ability_item_usage_generic.ConsiderAbility(AbilitiesReal, Consider)
	---------------------------------debug--------------------------------------------
	if (debugmode == true)
	then
		ability_item_usage_generic.PrintDebugInfo(AbilitiesReal, cast)
	end
	ability_item_usage_generic.UseAbility(AbilitiesReal, cast)
end

function CourierUsageThink()
	ability_item_usage_generic.CourierUsageThink()
end
